Towards Lattice QCD Baryon Forces at the Physical Point: First Results

2015/12/14 by Doi, Takumi, Aoki, Sinya, Gongyo, Shinya +9
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.1512.04199

Abstract

Lattice QCD calculations of baryon forces are performed for the first time with (almost) physical quark masses. N_f = 2+1 dynamical clover fermion gauge configurations are generated at the lattice spacing of a ≃ 0.085 fm on a (96 a)⁴ ≃ (8.2 \rm fm)⁴ lattice with quark masses corresponding to (m_π, m_K) ≃ (146, 525) MeV. Baryon forces are calculated using the time-dependent HAL QCD method. In this report, we study ΞΞ and NN systems both in ¹S₀ and ³S₁-³D₁ channels, and the results for the central and tensor forces as well as phase shifts in the ΞΞ (¹S₀) channel are presented.

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